- "ATM machine" is a pleonasm as the "M" of "ATM" stands for "machine".
- The use of "ATM machine" rather than "ATM" is common but is avoided by careful speakers and writers.
atm machine - Computer Definition
(Automatic Teller Machine machine) A banking terminal that accepts deposits and dispenses cash. ATMs are activated by inserting a cash or credit card that contains the user's account number and PIN on a magnetic stripe. The ATM calls up the bank's computers to verify the balance, dispenses the cash and then transmits a completed transaction notice. The word "machine" in the term "ATM machine" is certainly redundant, but widely used.